The diameter and weight of tungsten electrodes
Welding works on metal, involve the use of electrodes (European, national or international standard). Usually the electrodes are made of tungsten as the refractory metals provide high reliability welded joints due to high temperature of welding. Each tungsten electrode is color coded to eliminate confusion. Compounds of tungsten with oxides of lanthanum, cerium, yttrium and zirconium are widely used in welding, electroplating, manufacturing of batteries and many other devices.
The first numbers after the letters indicate the exact content of alloying elements in percent. So, the figure 20 means that the electrode material contains 2.0% of appropriate additives… the Subsequent figures in the designation of the rod, separated from the first by a hyphen, indicate the length in millimeters. The most common is a length of 175 mm, but also produces electrodes with a length of 50, 75 and 150 mm.
The parameters of the electrodes
|Mark’s electrode||Tolerance||Diameter, mm||Tolerance||Length, mm|
|Ml-2||±0.1||1, 1.6, 2, 2.5, 3, 4||±2.0||75; 150; 200|
|EEPS||±0.1||1, 1.6, 2, 2.5, 3, 4|
|±0.2||5, 6, 8|
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